Home / 3,688.28-5,089.46-2,175.80

Finding the Fourth Proportional to 3,688.28, 5,089.46 and 2,175.80

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Solution

The fourth proportional to 3,688.28, 5,089.46 and 2,175.80 is: 3,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.28 : 5,089.46 = 2,175.80 : x
  2. Step 2: Convert to fraction form
    3,688.28/5,089.46 = 2,175.80/x
  3. Step 3: Cross multiply
    3,688.28x = 5,089.46 × 2,175.80
  4. Step 4: Simplify right side
    3,688.28x = 11,073,648.91
  5. Step 5: Solve for x
    x = 11,073,648.91/3,688.28
  6. Step 6: Final answer
    x = 3,002.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.